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Oni

Large · Giant · CR 7 · Lawful Evil

Source. 5e 2014 Rules

16 (chain mail)

110 (13d10+39)

Ability Scores

Core attributes and their modifiers.

STR

DEX

CON

INT

WIS

CHA

Overview

Category Monsters

Size Large

Type Giant

Alignment Lawful Evil

XP 2900

Initiative Bonus +0

Movement

Walk 30 ft (9.1 m)

Fly 30 ft (9.1 m)

Swim 15 ft (4.6 m)

Climb 15 ft (4.6 m)

Crawl 15 ft (4.6 m)

Senses

Darkvision 60 ft (18.3 m)

Passive Perception 14

Saving Throws

Dexterity +3 Constitution +6 Wisdom +4 Charisma +5

Skills

Arcana +5 Deception +8 Perception +4

Languages

Common, Giant

Environments

Forest or Jungle Urban

Traits

Innate Spellcasting

The oni's innate spellcasting ability is Charisma (spell save DC 13). The oni can innately cast the following spells, requiring no material components:

At will: darkness, invisibility
1/day each: charm person, cone of cold, gaseous form, sleep

Magic Weapons

The oni's weapon attacks are magical.

Regeneration

The oni regains 10 hit points at the start of its turn if it has at least 1 hit point.

Actions

Change Shape

Cost 1

The oni magically polymorphs into a Small or Medium humanoid, into a Large giant, or back into its true form. Other than its size, its statistics are the same in each form. The only equipment that is transformed is its glaive, which shrinks so that it can be wielded in humanoid form. If the oni dies, it reverts to its true form, and its glaive reverts to its normal size.

Claw

Cost 1

+7 to hit, reach 5 ft (1.5 m). Hit: 1d8 thunder damage.

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) slashing damage.

Glaive

Cost 1

+7 to hit, reach 10 ft (3 m). Hit: 1d10 thunder damage.

Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 15 (2d10 + 4) slashing damage, or 9 (1d10 + 4) slashing damage in Small or Medium form.

Multiattack

Cost 1

The oni makes two attacks, either with its claws or its glaive.

About Oni

Oni is a large giant with a Challenge Rating of 7. It has a lawful evil alignment.

In combat, this creature maintains an Armor Class of 16 and possesses 110 hit points (derived from 13d10+39).

Oni has communication capabilities including Common, Giant. This allows it to interact verbally with various creatures and characters.

GM Tips: Using Oni

2 tips available

When using Oni in your D&D 5e campaign, consider these tactical approaches:

Flight Control Strategy: Target flying creatures with spells like 'Hold Person', 'Web', or 'Grease' to ground them. Without flight restriction, they can escape melee range easily. Consider area denial spells below their flight altitude to force them into disadvantageous positions.
Regeneration Counterplay: This creature regenerates HP each turn! Players must deal enough damage to overcome regeneration. Certain damage types (acid, fire) may suppress regeneration. Plan sustained damage output.

Player Guide: Facing Oni

2 strategies available

When your party encounters this creature, keep these strategies in mind:

Counter Flight Advantage: This creature can fly! Use ranged attacks, reach weapons, or spells like 'Thunderwave' to push it away. Consider 'Gust of Wind' or 'Earthbind' to ground it. Melee characters need fly speed or flight magic to engage.
Counter Regeneration: This creature regenerates HP each turn! Deal enough damage to overcome regeneration. Use acid or fire damage if it suppresses regeneration. Plan sustained damage output.

Encounter Building Calculator

Standard Party Encounter (4-5 characters):

This creature is a medium encounter for a party of 4 characters of level 7.

Solo Encounter:

A single character of level 10 (up to level 20) can face this creature in a medium to hard encounter.

Experience Point Thresholds:

Medium: 5,600 XP
Hard: 8,400 XP
Deadly: 11,200 XP

Based on D&D 5e Dungeon Master's Guide encounter building guidelines. CR roughly equals party level for medium encounters.

Frequently Asked Questions

What is the challenge rating of Oni?: Oni has a Challenge Rating of 7, making it appropriate for parties of level 7.0.
What type of creature is Oni?: Oni is a Large Giant, which affects how certain spells and abilities interact with it.
What languages does Oni speak?: Oni can communicate in Common, Giant.